IC manufacturers STMicroelectronics

IC manufacturers (103)

STMicroelectronics L99BM114 | Demoboard STEVAL-BMS114

Overview

TopologyBattery Management System
IC revision1.0

Description

The STEVAL-BMS114 is a battery management system (BMS) evaluation board that can handle from 1 to 31 Li-ion battery nodes. Each battery node manages from 4 to 14 battery cells, for a voltage range between 48 V and 800 V.The board is based on the L99BM114, a multicell battery monitoring and balancing IC, used in transportation and industrial application.The main activity of the L99BM114 is monitoring cells and battery node status through stack voltage measurement, cell voltage measurement, temperature measurement, and coulomb counting. Measurement and diagnostic tasks can be executed either on demand or periodically, with a programmable cycle interval. Measurement data are available for an external microcontroller to perform charge balancing and to compute the state of charge (SOC) and the state of health (SOH).The main functions of a standard BMS are monitoring and protecting the battery pack.The monitoring function is related to the measurement of the battery current, voltage, and temperature. The protection function brings the system to a safety state in case of under or overvoltage and overheating.The STEVAL-BMS114 provides an elaborate monitoring network to sense the voltage, current, and temperature of each cell.The STEVAL-BMS114 can work in two different daisy chain topologies: single access and dual access ring.In a single access daisy chain configuration, a series of AFE is connected to an MCU board through a single transceiver connected to the STEVAL-BMS114 isolated ISOLport. The AFE are connected to each other through the isolated ISOH port.The MCU communicates with the STEVAL-BMS1T hosted L99BM1T transceiver through the SPI protocol. The transceiver converts these signals into ISO SPI signals to communicate with the BMS.The STEVAL-BMS1T allows converting SPI signals into isolated SPI signals, thus reducing the number of necessary wires from 4 to 2 and implementing differential communication for higher noise immunity.

Features

Hosts the L99BM114 multicell battery monitoring and balancing ICVoltage monitoring of every single cell and of the entire battery nodeVoltage, current, and temperature sensing of each cell5 GPIOs to connect temperature sensors as NTCsAn NTC hosted on the L99BM114 to sense the chip temperaturePassive balancingCompact size: 100 mm x 76 mm

Typical applications

  • Energy generation and distribution

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
λDom typ.(nm)
Emitting Color
λPeak typ.(nm)
IV typ.(mcd)
VF typ.(V)
Chip Technology
50% typ.(°)
Gender
Pins
Type
Wire Section
Contact Plating
IR(A)
Working Voltage(V (AC))
Contact Resistance(mΩ)
Packaging
Qty.(pcs)
Stranded Wire Section (AWG)
Stranded Wire Section (Metric)
C
Tol. C
VR(V (DC))
Size
Operating Temperature
Q(%)
DF(%)
RISO
Ceramic Type
L(mm)
W(mm)
H(mm)
Fl(mm)
SW(mm)
Ti
Flammability Rating
Interface Type
Mount
Color
IR(A)
PCB/Cable/Panel
Samples
WL-SMCW SMT Mono-color Chip LED Waterclear, 525 nm, Green
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Dominant Wavelength [typ.]525 nm
Emitting ColorGreen 
Peak Wavelength [typ.]515 nm
Luminous Intensity [typ.]450 mcd
Forward Voltage [typ.]3.2 V
Chip TechnologyInGaN 
Viewing Angle Phi 0° [typ.]140 °
PackagingTape and Reel 
Packaging Unit4000 pcs
Size0805 
Operating Temperature -40 °C up to +85 °C
Length2 mm
Width1.25 mm
Height0.7 mm
MountSMT 
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Packaging Unit4000 pcs
Capacitance22 pF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Q-Factor840 %
Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Packaging Unit4000 pcs
Capacitance33 pF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Q-Factor1000 %
Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Packaging Unit4000 pcs
Capacitance2.2 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Packaging Unit4000 pcs
Capacitance4.7 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Packaging Unit4000 pcs
Capacitance6.8 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Packaging Unit4000 pcs
Capacitance10 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Packaging Unit4000 pcs
Capacitance47 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor3 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Packaging Unit4000 pcs
Capacitance68 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor3 %
Insulation Resistance7.4 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Packaging Unit4000 pcs
Capacitance100 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor3 %
Insulation Resistance5 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
WCAP-CSGP MLCCs 25 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Packaging Unit3000 pcs
Capacitance2.2 µF
Capacitance±10% 
Rated Voltage25 V (DC)
Size0805 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor10 %
Insulation Resistance0.05 GΩ
Ceramic TypeX7R Class II 
Length2 mm
Width1.25 mm
Height1.25 mm
Pad Dimension0.5 mm
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Packaging Unit3000 pcs
Capacitance1 µF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0805 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor10 %
Insulation Resistance0.1 GΩ
Ceramic TypeX7R Class II 
Length2 mm
Width1.25 mm
Height1.25 mm
Pad Dimension0.5 mm
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Packaging Unit2000 pcs
Capacitance4.7 µF
Capacitance±10% 
Rated Voltage50 V (DC)
Size1206 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor10 %
Insulation Resistance0.02 GΩ
Ceramic TypeX7R Class II 
Length3.2 mm
Width1.6 mm
Height1.6 mm
Pad Dimension0.5 mm
WR-WTB 2.00 mm Female Dual Row Terminal Housing w. positive locking, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
GenderFemale 
Pins30 
TypeTerminal Housing 
PackagingBag 
Operating Temperature -25 °C up to +85 °C
Insulation Resistance1000 MΩ
Length33.4 mm
PCB/Cable/PanelCable 
WR-WTB 2.00 mm Male Header, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
GenderMale 
Pins30 
TypeHorizontal 
Contact PlatingTin 
Rated Current3 A
Working Voltage250 V (AC)
Contact Resistance20 mΩ
PackagingTube 
Operating Temperature -25 °C up to +85 °C
Insulation Resistance1000 MΩ
Length33.4 mm
MountTHT 
ColorWhite 
Rated Current3 A
PCB/Cable/PanelPCB 
WA-SPAII Plastic Spacer Stud, metric, internal/ internal, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
PackagingBag 
Operating Temperature -30 °C up to +110 °C
Length8 mm
SW6 mm
Inner ThreadM3 
Flammability RatingUL94 HB 
ColorBlack 
WR-WTB 2.00 mm Female Dual Row Crimp Contact, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
GenderFemale 
TypeCrimp Terminal 
Wire Section 28 to 22 (AWG) 0.081 to 0.326 (mm²)
Contact PlatingTin 
Rated Current3 A
Working Voltage250 V (AC)
Contact Resistance20 mΩ
PackagingBig Reel 
Packaging Unit10000 pcs
Stranded Wire Section (AWG)28 to 22 (AWG) 
Stranded Wire Section (Metric)0.081 to 0.326 (mm²) 
Operating Temperature -25 °C up to +85 °C
Rated Current3 A
PCB/Cable/PanelCable 
WR-PHD Jumper, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Jumper
GenderJumper 
Pins
Contact PlatingGold 
Rated Current3 A
Working Voltage250 V (AC)
Contact Resistance20 mΩ
PackagingBag 
Operating Temperature -40 °C up to +125 °C
Insulation Resistance1000 MΩ
Length2.44 mm
ColorBlack 
WR-PHD Pin Header - Single, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
GenderPin Header 
Pins
TypeStraight 
Contact PlatingGold 
Rated Current3 A
Working Voltage250 V (AC)
Contact Resistance20 mΩ
PackagingBag 
Operating Temperature -40 °C up to +105 °C
Insulation Resistance1000 MΩ
Length5.08 mm
MountTHT 
WR-PHD Pin Header - Single, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
GenderPin Header 
Pins
TypeStraight 
Contact PlatingGold 
Rated Current3 A
Working Voltage250 V (AC)
Contact Resistance20 mΩ
PackagingBag 
Operating Temperature -40 °C up to +105 °C
Insulation Resistance1000 MΩ
Length7.62 mm
MountTHT 
WR-USB Standard Connectors, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
GenderReceptacle 
Pins
TypeHorizontal 
Contact PlatingSelective Gold 
Rated Current1.5 A
Working Voltage30 V (AC)
Contact Resistance20 mΩ
PackagingTray 
Operating Temperature -40 °C up to +105 °C
Insulation Resistance1000 MΩ
Interface TypeType A 
MountTHT 
ColorWhite 
Rated Current1.5 A
WCAP-CSGP MLCCs 100 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Packaging Unit4000 pcs
Capacitance100 pF
Capacitance±10% 
Rated Voltage100 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
WCAP-CSGP MLCCs 100 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Capacitance100 nF
Capacitance±10% 
Rated Voltage100 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor5 %
Insulation Resistance1 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Capacitance10 µF
Capacitance±10% 
Rated Voltage50 V (DC)
Size1210 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor10 %
Insulation Resistance0.01 GΩ
Ceramic TypeX7R Class II 
Length3.2 mm
Width2.5 mm
Height2.5 mm
Pad Dimension0.6 mm
WCAP-CSGP MLCCs 100 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Capacitance2.2 µF
Capacitance±10% 
Rated Voltage100 V (DC)
Size1210 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor5 %
Insulation Resistance0.05 GΩ
Ceramic TypeX7R Class II 
Length3.2 mm
Width2.5 mm
Height2.5 mm
Pad Dimension0.75 mm
WA-SCRW Pan Head Screw w. cross slot M3, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
PackagingBulk 
Packaging Unit2000 pcs
Operating Temperature -30 °C up to +85 °C
Length4 mm
Flammability RatingUL94 V-2 
ColorNatural 
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Packaging7" Tape & Reel 
Capacitance220 nF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor10 %
Insulation Resistance2.3 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm